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Titel |
Electron scale structures of thin current sheets in magnetic reconnection |
VerfasserIn |
N. Jain, A. S. Sharma, L. M. Zelenyi, H. V. Malova |
Medientyp |
Artikel
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Sprache |
Englisch
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ISSN |
0992-7689
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Digitales Dokument |
URL |
Erschienen |
In: Annales Geophysicae ; 30, no. 4 ; Nr. 30, no. 4 (2012-04-03), S.661-666 |
Datensatznummer |
250017209
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Publikation (Nr.) |
copernicus.org/angeo-30-661-2012.pdf |
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Zusammenfassung |
An electron-magnetohydrodynamic model is used to simulate the structure of an
electron scale current sheet during early phase of collisionless magnetic
reconnection. The current sheet develops structures, viz. bifurcated,
filamented and triple-peak structures at different locations in the current
sheet. The reversal of the net out-of-plane electric field seen by electrons
bifurcates the current sheet in the outflow regions, the individual peaks
having scale sizes of a few electron skin depths. Secondary instabilities of
the bifurcated CS lead to its filamentation in the outflow and separatrix
regions while triple-peak structures form at reconnection sites. These
structures have implications for the forthcoming NASA/MMS mission designed to
resolve electron space and time scales in the magnetosphere. |
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